CodePattern/12 语言特性/反射/反射_类.py

import cppy.cp_util as util

##########################################
#  工具类
##########################################
class wordsTaskHandler:
    def handle(self,path_to_file):
        return util.extract_file_words(path_to_file)

class frequenciesTaskHandler:
    def handle(self,word_list):
        return util.get_frequencies(word_list)

class sortTaskHandler:
    def handle(self,word_freq):
        return util.sort_dict(word_freq)

##########################################
#  应用框架
##########################################
def handle_task(task_type,*args):    
    handler_class_name = f"{task_type}TaskHandler" # 构建处理器类名
    
    # 使用globals()获取当前全局符号表
    handler_class = globals().get(handler_class_name)    
    if handler_class:        
        handler = handler_class() # 实例化处理器类        
        return handler.handle(*args) # 调用处理方法
    else:
        print(f"No handler found for task type: {task_type}")       


if __name__ == '__main__':   
    word_list = handle_task("words",util.testfilepath)
    word_freq = handle_task("frequencies",word_list)
    word_sort = handle_task("sort",word_freq)        
    util.print_word_freqs(word_sort)